An urban area has a population of two million residents. Three competing trunked mobile network (systems A, B and C) provide cellular service in this area. System A has 394 cells with 19 channels each. System B has 98 cells with 57 channels each; and system C has 49 cells each with 100 channels. Find the number of users that can be supported at 2% blocking if each user averages two calls per hour at an average call duration of 3 minutes. Assuming that all three trunked systems are operating at maximum capacity, compute the percentage market penetration of each cellular service provided (Data: GOS = 0.02 Number Of Channels Total Traffic Intensity (Erlangs) 57 45 19 12 100 88

Subject: Mobile Communication

Topic: Cellular Communication System

Difficulty: High

System A

Given: Probability of blocking= 2% = 0.02

Number of channels per cell used in the system, C = 19 Traffic intensity per user, = = 2 × (3/60) = 0.1 .

For = 0.02 and …